Pipe-wrench.



PATENTED OUT. 17, 1905. G. M. GBALY.

PIPE WRENCH.

APPLICATION FILED MAY 17, 1905 Jill/shin: 6% 6601,.

UNITED sTATEs PATENT OFFICE.

Specification of Letters Patent.

Patented Oct. 17, 1905.

Application filed May 17, 1905. Serial No. 260,813.

To a l l 7/;710711, it may concern.-

Be it known that I, GEORGE M. GEALY, a citizen of the United States ofAmerica, residing at Enon Valley, in the county of Lawrence and State ofPennsylvania, have invented certain new and useful Improvements inPipe-Wrenches, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to certain new and useful improvements inwrenches, and relates more particularly to a wrench adapted for grippingpipes and curved surfaces.

The invention has for its object to provide a novel form of wrench whichcan be easily and quickly placed in engagement with different sizes ofpipes and quickly operated to rotate or move the pipe in engagement withwhich it is placed.

Another object of this invention is to provide a pipe-wrench which willbe extremely simple in construction, strong and durable, comparativelyinexpensive to manufacture, and highly efiicient when used in connectionwith pipes or curved surfaces.

Briefly described, my improved wrench consists of a pair ofalligator-jaws which are loosely mounted upon a cam-lever which servesfunctionally as a handle. The body portion of the alligator-jaws isprovided with outwardly-extending pins or studs, and the cam lever isprovided with a pivotallymounted yoke carrying a suitable chain, whichis adapted to be placed over a pipe and placed in engagement with thepins or studs of the alligator-jaws when a pipe is engaged between saidjaws. The cam-lever or handle of the wrench is adapted to be manipulatedto force the jaws and the chain in engagement-with the pipe, wherebywhen the wrench is moved the pipe will be rotated in the direction towhich said wrench is moved.

The above construction will be hereinafter more fully described and thenspecifically pointed out in the claims, and, referring to the drawingsaccompanying this application, like numerals of reference designatecorresponding parts throughout the several views, in which Figure l is aside elevation of my improved wrench, partly broken away. Fig. 2 is aview of one edge of my improved wrench. Fig. 3 is a view of the oppositeedge of my improved wrench, the handle thereof being broken away. Fig. 4is a vertical sectional view taken on the line w of Fig. 3. Fig.

is a top plan view of the alligator-jaws of my improved wrench. Fig. 6is a side elevation of a modified form of construction which may be usedin connection with the wrench. Fig.

,7 is a perspective view of the alligator-jaw of the wrench; and Fig. 8is a side elevation view of my improved wrench, partly broken away,illustrating the wrench as locked in engagement with a section of pipe.

To put my invention into practice, I preferably construct my improvedwrench of steel or like durable metal, and the jaws of the wrenchconform in contour to what is known in the art as alligator-jaws.

The jaws 1 and 2 of the wrench are provided with substantially V-shapednotches or recesses 3 3, having serrated or toothed confronting faces 44. The jaws 1 and 2 are connected together by a body portion 5, havingan underneath face 6. The one edge of the body portion 5 is beveled, asindicated at 7, while the opposite edge thereof is provided withoutwardly-extending tuberous pins or studs 8 8, which may be madeseparately or as an integral part of the body portion 5. The dependingsides 9 9 of the jaws are provided with vertically-disposed slots 10 10,and between the depending sides 9 9 of the jaws is mounted a cam-leveror handle 11. The camlever is held in engagement with the dependingsides 9 9 of the jaws by a sleeve 12, which extends through the slots 1010 and through an opening 14:, formed transversely in the upper end ofthe cam-lever or handle 11. A headed bolt 15 passes through the sleeve12, and upon each end of the bolt 1 place a washer 16 and employ a nut17 to retain the bolt and washers in position. The upper end of thecam-lever or handle 11 is provided with a curved cam-surface 18, whichis adapted to engage the beveled face 6.

Pivotally connected to the cam-lever 11 near its upper end is a yoke 19,to which is attached one end of a chain 20.

In operation the alligator-jaws 1 and 2 of the wrench are placed inengagement with a pipe, such as designated by the referencenumeral 21 inFig. 8 of the drawings. The chain 20 is then swung upwardly between thejaws of the wrench and over the pipe, at which time the chain is placedin engagement with the pins or studs 8, one of the links of said chainbeing placed between said studs. In so gripping the pipe 21 thecam-lever 11 is placed at an angle to the alligator-jaws, which permitsof the jaws moving downwardly in respect to the end of the lever and thesleeve 12 receding to the upper end of the slots 10. After the chain hasbeen placed over the pipe and in engagement with the studs 8 8 thecam-lever 11 is adapted to be moved into alinement with the jaws or asnearly so as possible until the chain has become taut and locked thepipe 21 in engagement with the alligator-jaws 1 and 2 of the wrench, atwhich time by further moving the lever 11 the pipe 21 can be rotated.

In Fig. 6 of the drawings I have illustrated the studs 8 8 as beingcarried by a yoke 22, which is secured to the sides of the jaws 1 and 2,and this construction can be readily employed in connection with myimproved wrench, it of course being understood that the studs may, if itis deemed desirable, be made integral with the body portion 5 of theaws.

From the foregoing it will be observed that any-sized pipe that will fitwithin the alligatorjaws of my improved wrench can be readily gripped,and in this connection I do not care to confine myself to any-specificsize of wrench, as the same may be readily made of such proportions asto grip large sections of pipes or tubing.

While I have herein described the preferred manner of constructing myimproved wrench, it is obvious that various changes may be made in thedetails of construction without departing from the general spirit andscope ofthe invention.

WhatI claim, and desire to secure by Letters Patent, is

1. An implement for the purpose set forth comprising a pair ofalligator-jaws, each having a depending portion provided with a verticalslot, a body portion spacing said jaws apart and to which they aresecured, pins carried by said body portion, the said body portion havingan incline underneath face, a lever having a beveled upper end receivedbetween the depending portions of the jaws and engaging the incline faceof said body portion, a sleeve passing through said lever and throughthe said slots, a bolt passing through said sleeve for securing thelever to the jaws and a chain pivotally connected to the lever andadapted to be engaged with the pins carried by said body portion,substantially as described.

2. In a pipe-wrench, two jaws of alligator form, spaced apart by a bodyportion interposed therebetween, and having portions depending belowsaid body portion, said depending portions provided with vertical slots,a lever received between said depending portions, and having a beveledupper end to engage an incline lower face on the body portion, meanspassed through the lever and engaged in said slots to secure the leverto the jaws. a chain having its one end connected to the lever, andmeans carried by the body portion to which said chain is adapted to beconnected after being passed around a pipe, substantially as described.v

In testimony whereof I affix my signature in the presence of twowitnesses.

GEORGE M. GEALY.

Witnesses:

JOHN ZEH, C. E. BRADEN.

